Review on Tatoko 5PCS Mini Buzzers With Leads for Occupational Health & Safety Products by Daniel Ogbebor

I'm always looking for a product that does what it says on the Revain product page and is reasonably priced. This summer is great! It produces a loud noise in excess of the advertised 73 dB over a wide voltage range. It is advertised as a 400Hz buzzer but there is a small typo in the product information that says 400kHz. As another reviewer points out, this is incorrect. But that typo is obvious to the casual observer, so don't worry about ranking. As shown in my video, this Tatoko buzzer works well from 4.5 to 12V DC. It comes in a sturdy plastic packaging with two holes for easy assembly. The audio output contains a wide range of frequencies including but not limited to 400Hz - see video. If you want smooth, accurate 400Hz tone, you're looking for the wrong product at the wrong price point. But if you just want a good buzzer that makes a great alarm sound, then this pack is for you. And at a great price!